Printer and printing method for recording image during...

Details Printer and printing method for recording image during... Printer and printing method for recording image during...

2006-06-20

2008-08-26

Tran, Huan H (Department: 2861)

Incremental printing of symbolic information

Thermal marking apparatus or processes

C347S172000, C347S175000, C347S176000, C347S174000

Reexamination Certificate

active

07417655

ABSTRACT:
A printer comprises a feed roller to which driving force is transmitted from a motor via a reducer. While the feed roller moves a recording paper, an image is recorded by a line print head one line by one line. The feed roller is provided with a rotary encoder. A controller counts encoder pulses (measured EP) of the rotary encoder to measure an actual feed amount of the recording paper. Whenever five lines are recorded, the measured EP is compared with predetermined reference encoder pulses to detect a feed error of the recording paper. In case that slipping or the like occurs on the reducer, delay in feeding the recording paper is caused. A printing cycle of the next five lines is adjusted so as to eliminate the feed error. In this way, a printing length of one frame is adjusted to a target printing length.

REFERENCES:
patent: 6769759 (2004-08-01), Yamasaki et al.
patent: 11-146676 (1999-05-01), None
Computer-generated translation of JP 11-146676 cited in the IDS filed on Jun. 20, 2006.

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